Horny school friend! Just grabbed my skirt!

Yesterday we had our first class reunion! One pupil comes from the same town, so we met at my house and then travelled to the reunion together. We were a bit strange to each other straight away because we hadn't seen each other for so long and we're not 13 years old anymore. Just as I was standing with my back to him and wanted to google for directions, his hand went under my skirt! Oh man, at first I was totally perplexed as to what that was all about and well, he also realised that I wasn't wearing any panties underneath... Phew, I couldn't believe what happened next!